“Never again could it be cleansed; it would prove that man, the human species – we, in short – had the potential to construct an enormity of pain, and that pain is the only force created from nothing, without cost and without effort. It is enough not to see, not to listen, not to act.”

The future of humanity is uncertain, even in the most prosperous countries, and the quality of life deteriorates; and yet I believe that what is being discovered about the infinitely large and infinitely small is sufficient to absolve this end of the century and millennium.

Our ignorance allowed us to live, as you are in the mountains, and your rope is frayed and about to break, but you don’t know it and feel safe.

To accuse another of having weak kidneys, lungs, or heart, is not a crime; on the contrary, saying he has a weak brain is a crime.

To give a name to a thing is as gratifying as giving a name to an island, but it is also dangerous: the danger consists in one’s becoming convinced that all is taken care of and that once named, the phenomenon has also been explained.

A scientist’s life, the author says, is indeed conflictual, formed by battles, defeats, and victories: but the adversary is always and only the unknown.

More dangerous are…the functionaries ready to believe and act without asking questions.

For he who loses all often easily loses himself.

If it is true that there is no greater sorrow than to remember a happy time in a state of misery, it is just as true that calling up a moment of anguish in a tranquil mood, seated quietly at one’s desk, is a source of profound satisfaction.

The new kings of the world will live tranquilly for a long time, confining themselves to devouring each other and being parasites among each other on a cottage industry scale.

A country is considered the more civilised the more the wisdom and efficiency of its laws hinder a weak man from becoming too weak and a powerful one too powerful.

If a writer is convinced that he is honest, then it is very difficult for him to be a bad writer.

We who survived the Camps are not true witnesses.

It happened, therefore it can happen again: this is the core of what we have to say. It can happen, and it can happen everywhere.

My number is 174517; we have been baptized, we will carry the tattoo on our left arm until we die.

Human memory is a marvelous but fallacious instrument.

To accuse another of having weak kidneys, lungs, or heart, is not a crime; on the contrary, saying he has a weak brain is a crime.